Question: Who is the writer of "The Murder of Roger Ackroyd", which has been active since 1920-0-0?
Paraphrase: Who is the writer of "The Murder of Roger Ackroyd", which has been energetic when you consider that 1920-0-0?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q224078 wdt:P50 ?answer . ?answer wdt:P2031 ?x FILTER(contains(YEAR(?x),'1920'))}
Answer: Agatha Christie